Concave lenses are less common than convex lenses in optical engineering, but they still have some useful applications. Some examples of devices that use concave lenses are eyeglasses, peepholes ...

Convex pedals need to be thicker at the leading and trailing edges, or have taller pins there, making them more prone to pedal strikes. Flat pedals don't have the thinner leading and trailing edges of ...

To correct this defect, a person is prescribed bifocal lens that has both types of lenses convex and concave. Aditya, Jaunpur ...

Bimetallic convex and concave nanocrystals are an ideal platform that is intriguing for Surface‐Enhanced Raman Scattering performance and for various catalytic applications, due to the existence of ...

A numerical simulation of oxide thinning at convex and concave corners of trench structures is discussed. The stress effect on the oxide growth is modeled by solving oxidation kinetic equations ...